학술논문
Backscatter Tag Based on an Actively-Controlled Reflection Amplifier
Document Type
Conference
Author
Source
2023 53rd European Microwave Conference (EuMC) Microwave Conference (EuMC), 2023 53rd European. :746-749 Sep, 2023
Subject
Language
Abstract
This paper presents the front-end design of a backscattering tag at 900 MHz, using a transistor-based reflection amplifier and a phase modulator to maximize the differential radar cross-section of the tag. In addition, the front-end integrates a current sensor to actively control the bias current of the reflection amplifier, turning it off when the incoming RF power is large enough to operate without amplification, saving energy and preventing the tag from starting to oscillate.